<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form id="form1" >
    <label>
        身份证号：</label><input type="text" id="txtId" />
    <input type="button" value="验证" onclick="CheckId()" />
</form>

<script>

  //    18位省份证7、8、9、10为出生年份；11、12位为月份；13、14位为日期；第17位为性别，基数为男，偶数为女
  function IdCard(UUserCard,num){
    if(num==1){
      //获取出生日期
      birth=UUserCard.substring(6, 10) + "-" + UUserCard.substring(10, 12) + "-" + UUserCard.substring(12, 14);
      return birth;
    }
    if(num==2){
      //获取性别
      if (parseInt(UUserCard.substr(16, 1)) % 2 == 1) {
        //男
        return "男";
      } else {
        //女
        return "女";
      }
    }
    if(num==3){
      //获取年龄
      var myDate = new Date();
      var month = myDate.getMonth() + 1;
      var day = myDate.getDate();
      var age = myDate.getFullYear() - UUserCard.substring(6, 10) - 1;
      if (UUserCard.substring(10, 12) < month || UUserCard.substring(10, 12) == month && UUserCard.substring(12, 14) <= day) {
        age++;
      }
      return age;
    }
  }
  //    alert (IdCard('142223198503226111',3));

  //    方法二：正则判断省份、生日、性别
  //    前2位判断省份
  //定义地区数组
  var CityArray = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外" }

  //验证身份证及返回地区、出生年月、性别
  function CheckIdCard(sId) {
    if (sId.length == 15) {
      sId = sId.replace(/([\d]{6})(\d{9})/, "$119$2x");
    }
    var iSum = 0
    var info = ""
    if (!/^\d{17}(\d|x)$/i.test(sId)) return "非法的身份证号";
    sId = sId.replace(/x$/i, "a");
    if (CityArray[parseInt(sId.substr(0, 2))] == null) return "Error:非法地区";
    sBirthday = sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2));
    var d = new Date(sBirthday.replace(/-/g, "/"))
    if (sBirthday != (d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate())) return "Error:非法生日";
    for (var i = 17; i >= 0; i--) iSum += (Math.pow(2, i) % 11) * parseInt(sId.charAt(17 - i), 11)
    if (iSum % 11 != 1) return "Error:非法证号";
    return CityArray[parseInt(sId.substr(0, 2))] + "," + sBirthday + "," + (sId.substr(16, 1) % 2 ? "男" : "女")
  }

  //调用验证方法
  function CheckId(id) {
//        var id = $("#txtId").val();
    if (id != "") {
      alert(CheckIdCard(id));
    }
  }
  CheckId("51382219921214319X");
</script>
</body>
</html>
